JGSDF armoured tracked personnel carrier - 1/76th - diecast

This group of diecast JGSDF vehicles was bought from a small militaria shop in East Dulwich - probably in the 1980s. The owner said that he had bought them from an Australian. I have currently mislaid them and these are scans of photos I took some time ago. They did have a manufacturer's name on them, but I have not got a record of it and could not find any references to them on the net when I looked, some years ago.
This AFV may be a mortar carrier.